On the undercard of the Martinez-Murray fight in Buenos Aires, another of Argentina's top fighters, Luis Carlos Abregu, takes part in a battle of once-beaten welterweights when he meets Montreal's Antonin Decarie. Abregu's lone loss, a competitive battle with Tim Bradley in 2010, is certainly nothing to be ashamed of. But it's his latest win that is truly eye-catching, a seventh-round TKO of formerly 16-0 prospect Thomas Dulorme last October. Interestingly, Decarie can match that win: Last September, he too upended a 16-0 prospect, stopping Alex Perez in six rounds. Decarie isn't typically a knockout puncher and that, combined with Abregu's hometown advantage, make him the underdog here. But this still has the makings of a fun and highly competitive stage-setter for the Martinez-Murray main event.

And in the broadcast opener, emanating from Citizens Business Bank Arena in Ontario, California, heavyweight contender Chris Arreola ends a 14-month layoff to start what might be one last run at a title shot when he takes on heavy-handed Bermane Stiverne. This fight has been scheduled and postponed twice already, but the waiting should be worth it once these two aggressive-but-flawed knockout punchers start letting their hands go.